设P是曲线上的一点，若一条直线通过P及曲线上邻近的另一点Q，PQ称为曲线的割线。当Q趋于P时，割线PQ的极限位置，称为曲线在P点的切线，P称为切点，此时直线与曲线相切于P点。如果一个多边形（或多面体）的每一边（或多面体之每一面）均与位于其内的一条闭曲线（或曲面）相切，则称此多边形（或多面体）外切于该曲线（或曲面）。
外切 [wài qiē]
网络释义专业释义
短语
外切酶 exonuclease ; exo-PG ; cbh ; Exoglycosidases
外切圆 [数] circumscribed circle ; excircle ; externally tangent circle
外切体复合物 exosome complex
脱氧核糖核酸外切酶 [生化] exodeoxyribonuclease
核酸外切酶 [生化] exonuclease ; Proofreading ; Exon ; Proofredriving instructorng
外切核酸酶 [生化] exonuclease ; Lambda Exonuclease ; RNase II
外切刃点 Outside blade
外切糖苷酶 exoglycosidase ; exo-glycosidases
双语例句原声例句
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另一种治疗外切向日葵压力的半径疗法是无脂体育运动。
Another radius medicine for circumscribed sunflower pressure is fatless physical exercise.
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单纯进行关节外切开治疗的13例患者中有2例疾病复发。
Symptomatic disease recurred in two of the thirteen hips treated with arthrotomy alone.
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花生种子发育过程几丁质内切酶、外切酶与抗黄曲霉侵染的关系研究。
Study on relationships between endochitinase exochitinase and resistance to aspergillus flavus during seeds development of arachis hypogaea l.
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If I cut up just DNA from the chromosome, what's called genomic DNA, then I'm going to have both exons and introns within the fragments that I create.
如果我切割的恰好是染色体上的,基因组DNA,那我切成的片段上,就会同时有外显子和内含子
应用推荐
$firstVoiceSent
- 来自原声例句